Figure 4.
Dendrogram clustering analysis using “Single Linkage” method of the study means, and study SDs among 21 included studies in the subgroup meta-analyses.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.